Stove.



No. 698,798. Patented Apr. 29, |1902.

E. R. CAHOONE.

STUVE.

(Application mea may 19, 1899.)

4 Sheets-Sheet I.

(No Model.)

,erg

Yu: mams Eriks ou., wom-uma. WASHING-mn. n. cA

2. o m 9, 2 T. p A. d e t n nu t a P .L N 0 H A C om E. om 9 7, oo 9 6 0. N

STOVE.

Application filed May 19, 1899.)

y Jn vado: C62/71,001@

71 1 :z Uro m 4 Sheets-Sheet 2,

(No Model.)

0,. PHumLIYHo.. wAsr-nuafon n c Patented Apr. 29, |902. E. R. CAHDNE.

4 Sheets-Sheet 3.

(Ilo Model.)

uvam oz Talca-kein? Occ/waive @Dvi/IHM z auf I E. R. CAHNE.

STOVE.

(Application led May 19, 1899.)

{No Model.)l f 4 Sheets-Sheet 4.

No. 999,799 Patented Apr, 29, |992.

tutor," mi

m: nonms Pains ca.. pHcraLlrNo. wsHmGToN. D. c.

UNITED STATES PATENT @Emea EDWIN R. oAnooNE, or

NEWARK, NEV JERSEY.

sTovE.

SPECIFICATION forming part of Letters Patent Np. 698,798, dated April .29, 1902.

Application nea May 19, 1899.

To all whom, it may concern.

Be it known that I, EDWINR. CAHOONE, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Stoves, of which the following is a specification.

My invention relates to improvements in stoves or ranges having a pendent air-duct, and is designed more especially for burning soft or bituminous coal.

The object of the invention is to provide means for delivering heated air to the pendent air-duct, breaking the same by contacting with peculiarly-arranged baffle-plates, and then delivering said air to the fuel through the various exits or chambers.

The prime object of my present improvement is to supply equally-distributed air to the fuelin the combustionchamb'er and regulate the admission of the same.

A further object of this invention is to provide improvements in the details of construction of the air-duct.

Other objects will appear farther on in the description and be particularly pointed out in the claims. A

In the drawings,Figure 1 is a sectional view of a stove, showing my improvements applied thereto. Fig. 2 is a horizontal section on line 2 2, Fig. 1, the air-duct being shown in full lines. Fig. 3 is a detail perspective View of a portion of the pendent duct. Fig. 4 is a detail frontview of a burner plate or shield, showing more clearly the perforations therein for the exit of heated air. Fig. 5 is adetail perspective view of the lower .portion thereof. Fig. '6 is a-detail View of an air-heating pipe for admitting heated air to the air-duct. Fig. 7 is a detail view showing a modified form of securing together the heated-air distributers at the lower end of the air-duct. Fig. 8 is a plan vleW of amodiled` form of my improved air-duct. Fig. 9 is a further modification of the same. y Fig. lOsadet'ailthereof. Fig. 11 isastillfurther modification of an air-duct. Fig. 12 is a detail side elevation of the front portion of a stove, showing parts broken away to illustrate a modified means of introducing air to the air-duct. Fig. 13is a detailyiew of a combined sight and draft opening. Fig. 14 is a section of the same. Fig. 15 is a view showthe cooperating parts of the air-duct.

Serial No. 7175516. (No model.)

ing a means of admitting air to the air-duct from one'side of the stove. Fig. 16 is a view of a modified form of heated-air distributor and shield together with a downwardly-extending tube. Fig. 17 is a detail perspective View of the front grate. p

The numeral 1 represents a stove of ordinary construction; 2, the fuel-magazine; 3, the grate; 4, the front grate, and 5 the top.

The term fuel-magazine as used throughout this description and the claims is intended to refer to a fuelmagazine as generally understood or to a re-pot.

In burning a certain grade of soft coal which is rich in gas, after it is lighted the gas spurts or puffs out`between the cracks and joints of the front door. I overcome this objection and direct the gases back into the combustion 4 chamber by providing a grate located in frontof the fuel-magazine and beind the door 4. The grate 4ad is substan tially the same as those hereinbefore employed, except the upper edge is cut away, as at 4", and means are provided for the insertion of a poker, as at 4C. This means consists of forming a rib 4d between two of the grate-bars, so as to form a rest for the poker, so that it can oscillate or rock about on said rest. In order that the space above the connecting-bar 4d might not be clogged up by the particles of fuel, I preferably have an opening therebe- Itween which is large enough for the dust or small particles of coal to drop through and not large enough for the pokerto drop down.

To the under side of the top of the stove are :suitably supported two depending flanges 6, lwhich extend all the Way across the fuelmagazine and afford means for supportirg T e flanges or partitions 6, near the upper ends, have perforations 7. Between the lower ends ofl the vflanges is supported a series of heatedair distributers 8. Said distributers are or maybe-held in position by a pin 9, 'passinvention, and I will now proceed to describe them in detail. They are approximately IOO 2 eeaves fuel and an even combustion will be produced.y

Along the inner and outer edges of the square portion vabove referred to and extending up to very near the top of the reduced portion 11v are grooves or air-passages 14, which communicate with the main air-duct formed by the depending flanges 6.' On the j ends of the square portion 12n are vertical coal is the thickest and where it usually congeals.

This mass is prevented or if the fuel should congeal it is separated by the arrangement ofv the numerous passages through which currents of heated 'air pass and the manner in which said currents of air are di-v rected.

Owing to the excessive heat which naturally arises from burning soft coal, it is ab'- j sol'utely necessary that thedepending fianges d and the supporting means be properly protected and prevented from being exposed to thel direct action of the products -of combustion. For the purpose 'of preserving these parts shields 1G are secured'to each side of the air-duct, a portion of one of said shields being shown inV detail in Figs. 4 and- 5. Itv

will vbe seen` from these figures that each shield is preferably composed of a corrugated piece of material, the 'corrugations Aforming projections 17 and grooves 1S, either or both of which may be provided with a series of small air-openings 19,' each opening`19 on the `projectionI 17 being protected'and prevented from being choked by particles of fuel by an over-hanging ledge 20. At the'extreme lower end of the shields are inturned flanges 21, the inner edges being corrugated or formed 'with a'seriesof notches 22,' which preferably register with the notches or grooves 14 in the distributers 8 when the parts are put together.

The turned-in portion prevents the action of the products of combustion from destroying the airduct7 walls. The shields are also provided on their' inner sides with a series of baffle-plates 23, alternating and coacting in 'connection'with asimilar series of baiiieplates 247, formed or secured on the depending walls 6 of the air-duct; Each of the projections'l of the shields when put together abuts against a flange 25, formed on each of i the distributers 8. However, this is not entirely necessary,V but is found a ready means of breaking up the particles of air. The shields are secured to the walls of the air-duct by means of a pin 2G, projecting from said duct and extending through a perforation in said shield, the parts being locked'by means of a cotter 27 or any well-known means. If desired, however, the air-distributers may be connected in series by the arrangement disclosed at 40 in Fig. '7.

I do not desire to be limited to a shield'made in one piece, as it is often desirable to make them in sections, as shown in Fig. 3. By this construction "one or more sections when burned out can be removed and the portions of the shield not having been affected by the heat can remain in place.

Referring more particularly 'to Fig. 16 of the drawings, it will be seen that I provide an air-passage 28a, which may be supplied with air from either the front, top,-orside, such supply means not being shown, and hascommunicating therewith 'a pipe or pipes 28h, which lead down directly to and within the fuel-magazine. A heated-air distributer of some refractory material is provided for the end of these pipes to protect the same from the heat. The heated-'airdistributer as disclosed in this Fig. 1G is solid and is incased by a shield 16. In this instance airis directed in the main passage 28, thence through the pipes or tubes 28h to and above the fuel. The air admitted through the passage 2S? 'also passes through the spaces formed between the grooved side walls 11 of the distributer and the grooved walls of the shields, through'the perforations in said shields and the perfora, tions inthe ilanges around the square portion 12LL of the distributer to the fuel-chamber.

To direct heated air to the main air-ducts I provide in this instance on each side 'and within the stove two draft-pipes 2S, lincased within some refractory in aterial. These pipes, as I have shown inthe drawings, are located in the corners and extend from a point just above the grate up to the top of the magazine and then bent at right angles, the inner sides being flared and directed to the main air-duct. It will ofcourse be understood that the shields will or may have their 'corners cut away, as shown at 29, to accommodate the flared ends ofthe pipes. While the pipes or flues are the preferred manner 0f supplying heated air to the main air-duct, it is' sometimes desirable to direct the air through perforations inthe side of the stove, as shown at 30 in dotted IOO IIO

mission regulated by a damper 34. This feature is more especially designed to introduce currents of heated air at the very bottom of the fuel, said currents of air cooperating with the air-currents delivered to the fuel from the air-duct, and assists in producing a uniform combustion.

In the modified forms ot my invention shown in Figs. 8, 9, and 10 I have shown a series of elongated heated-air distributers 41, each of which is composed of a body portion 42, projections 43, and semi'circular grooves 44 in each side of said body portions, and a series of inclined grooves in the iianges surrounding the grooves 44. Said grooves communicate with the vertical grooves 44. While I have shown a single row of pendent elon gated distributers forming an airduct, I may arrange them as shown in Fig. 9, wherein an air-duct is formed by two or, if necessary', four of these distributers 41. These distributers are held together by bolts and can be made of any material, but preferably refractory, so as to withstand the excessive heat. It is evident these modifications may be used in place of the air-duct or they may be utilized as airdistributers in connection with an air-duct.

I am aware one pipe instead of two may be used to supply heated air to the air-duct, as clearly shown in Fig. 15. Air is admitted at 110 into a main passage 111, where it is dis-A tributed to all parts of the entrance of the duct by means of adividing-plate 112, suitably supported in the main passage 111. The purpose of this dividing-plate, it is thought, will be evident. The air is divided, part of the supply going to the right and the other to the left, as clearly indicated by the arrows. As a further means of introducing air directly to the fuel in connection with the air-supply coming from the side of the stove to the airduct the lining of the stove is constructed in the'manner shown in this figure. Openings 113 are formed inthe lower portion of the lining 114 and take air directly to the combustion-chamber. On the opposite side of the fuel-magazine the lining is made in sections and the upper one of said sections is located over the lower section and a slight distance in advance thereof. Air is admitted from thev ash-pit and enters the combustion-chamber at 115.

The advantages of my improvements are numerous, and many changes may be made without departing from the spirit and scope of my invention. For instance, the air-distributers may be made of refractory or of any other material which will withstand the heat. The holes or perforations may not always be necessary in said distributers, and I reserve the right to the use of one or the other.

It will be noticed by reference to the drawings that a distrbuter when burned out or broken can be readily taken out and a new one replaced by simply taking off the shields and releasing the supporting-bolts 26. In this connection Idesire to state that it is not necessary to use a series of distributers, as good results have been obtained from one extending from one Vside ofthe st'ove to the other.

While I have shown a shield applied to each side of the air-duct and prefer such arrangement, under certain conditions I may only use one of said shields, and if the fuel is not very soft both can be dispensed with. In this latter case the walls of the air-duct would have to be made of such material as would resist the heat. Itis not absolutely essential that the shield should be perforated. In fact the walls of the air-duct need not be.

Ilowever, I prefer that both should have airexits, as shown. The corrugated shield affords a ready means for directing the air and distributing it among the particles of fuel. While I have shown these shields as being corrugated, I do not desire to limit myself to this construction, as a straight shield would answer the same purpose in many cases.

The operation of my invention will be readily understood by those skilled in the art to which it appertains. The soft coal is placed within the tire-chamber, the dampers being regulated accordingly until the fuel becomes ignited. The air is directed to the main airduct and distributed therefrom to the coal.

through the various perforations lalready described and also through the grooves inthe distributers in a very even and well-regulated manner, which will tend to burn the coal uniformly and every particle thereof.

In Fig. 11.is shown a construction whereby the heat-distributers are supported by a frame 51, made in sections and bolted together at the top either by bolts or other means. The frame 51 is provided at the lower ends with inturned lugs 52, which fit under a flange 53 on the reduced portion of the air-distributers, thus supporting said distributers in a fixed position. The frame 51 is supported by the pendent air-duct, as at 53', theair-duct being held in position by havingi'ts upper ends flanged and riveted to the top of the stove. The flange on the front wall is dropped at intervals, so as to form a passage 54, said passage extending out to the front and provided with a suitable damper 55.

To further assist in heating the air before it reaches the fuel and to insure the removal of any chilled current being admitted thereto, a device 56X is arranged in the air-duct. This device consists of a perforated wall or walls 57, suitably supported, and a hood 58, placed -over said walls, a slight space being formed between the tops of the walls and the hood. The air in entering the duct strikes the hood and is deiiected down and through theperforations in the walls, then up through the space 59, and thence to the air-distributer, By this time it is thoroughly heated and absolutely prevents any chilled air entering the combustion-chamber. I do not care to at all times use this feature in connection with my distributer, but as an additionalmeans for IOO IIO

preventing this chilling of the air, which under certain conditions must be retarded.

In Fig. 1 is shown a door or feeding device 58 for supplying fuel tothe fuel-magazine.

This door consists of a suitable frame 59 and air-iiues 60, located in suitable positions therein, so as to admit a limited amount of air at the top of the fuel-magazine. The feeding -device is so constructed that it can be attached and detached at will.

Experience has taught me that stoves of f this class require an even distribution of air- 'at a pointwhere the fine passes up behind the pendent air-duct, and to admit heated air at this point a novel means is employed. As shown a t 50, a series of pendent projections, such as before described for another purpose,

are placed side by side and held together by- 'a rod. In fact the'manner of Workingand the detail description of these pendent pieces is substantially the same as above referred to. It will therefore be seen that by introducing Yair atthis point I have distributed heated air to' every side of the fuel and in proper vproportions necessary to obtain the desired results'. The air passes up through the ash-pit through the vertical air-passages, and thence -in a downwardly direction through the in- 'clined passages to the fuel.

Fig. 12 represents aform of stove whereby air may be taken into the air-duct from the rear, the only difference or addition being that of a series of baffle-plates 73, located be- -tween the upper rear Wall of the air-duct and' the upwardly-projecting portion 74 of the stove. The 'admission of air is regulated by stated.

Figs. 13 and 14 represent a combined airinletand peep opening. Apassage 76 is made between the lining 77 and the side of the stove. This passage communicates at the lower end with the ash-receptacle and at the upper end with av passage 78, formed between the bottom of the housing 79 and a plate 81), the. latter being held in place by a bolt or screw 81. A frame 82 may be bolted to the outer'end'of the housing and supports the mica 33, the air passing between the mica andthe end of-the door of the housing to the combustion-cham ber. 'Ihe purpose of this construction is twofold-it keeps the mica clean and at the same time introduces heated airto the fuel.

Having thus described my invention, what I claim isl. In a stove, the combination with apendent air-duct open at the bottom, shields secured to the front and rear of said-airduct, and removable means within the bottom of said duct for distributing heated air, subthe air-ductsand the atmosphere, and means 'for regulating the admission of air to said pipes, substantially as shown and described. 3. In a stove, the combination with a fuelmagazine, a pendent air-duct, right-angular air-feeding pipes within the fuel-magazine, the horizontal portion of said pipes entering the air-duct at the upper end of the latter and the vertical portion of said pipes communicating with the atmosphere, and means for regulating the admission of air to said pipes, substantially as shown and described.

4. In a stove, the combination with a pend- -ent air-duct, open at the lower end, of de- -tachable shields on the front and rear of said air-duct, removable tips secured within the vlower end of said duct, and air-inlet pipes entering the air -duct through the shields, substantially as shown and described.

'5. In a stove, the combination with a fuelmagazine a pendent air-duct located within said fuel-magazine, shields on each side of said air-duct, and air-heating distributer or distributers removably secured within the lower open end of the air-duct, substantially as and for the purpose set forth.

6. In a stove', the combination with a fuel-V magazine, a pendent air-duct located within said fuel-magazine, air-inlet pipes entering each end ofsaid air-duct, said air-inlet pipes being located across the upper part and ex'- teuding downwardly within the fuel-maga; zine, to a'point above the grate, and means for regulating the admission of air to said pipes, substantially as and for the purpose set forth.

7. In a stove, the combination with a fuel- .magazine, an air-duct, pipes located in said fuel-magazine,said pipes comm unicatin g with the atmosphere for supplying air to said air duct, a lining set in from the sides of the stove to form an air-heating chamber, said lining having air-exits communicating with the fuel-magazine, and means for regulating the supply of air to said chamber, substantially as shown and described.

8. In a stove, the combination with a fuelmagazine, a pendent air-duct, means for supplying said air-duct with air at both ends, a perforated lining in said fuel-magazine set in from the stove sides to form an air-heating chamber, and means for regulating the admission of air entering at the ends of the airduct, and the air-heating chamber, substantially as shown and described.

. 9. A pendent air-duct, and an air-distributer consisting of a main body portion, and a reduced portion, the latter portion fitting in said air-duct, and air-spaces being formed between said duct, and the reduced portion of the air-distributer for the escape of the air from the duct, substantially as described.

10. A pendent air-duct, and an air-distributer consisting of a main, solid portion, and a reduced upper portion, the latter portion ittinginsaid air-duct air-spaces beingformed between said duct and the reduced portion roo izo

of the air-distributers, substantially as described.

11. Apendent air-duct, and an air-distributer consisting of a main body portion having a series of horizontal grooves and a reduced upper portion having a series of vertical grooves which form a continuation of the horizontal grooves in the main body portion, said upper portion fitting within said air-duct, substantially as and for the purpose set forth.

12. A pendent air-duct, and an air-distributer consisting of a main body portion, provided with a series of horizontal and vertical grooves, a reduced upper portion which fits within -said air-duct, said portion havingv a series of vertical grooves which form a continuation of the horizontal grooves formed in the main body portion, and a tapering bottom, said tapering bottom forming one part of an arch, which latter is formed when two or more distributers are placed side by side, substantially as shown and described.

13. A shield for a pendent air-duct, con ssting of a perforated corrugated main body portion, said corrugations gradually tapering to a straight edge and an inturned flange at l the bottom, the inner edges of said flange be- Ass ing horizontally corrugated, substantially as and for the purpose set forth.

14:. In a stove or, range, the combination with a pendent air-duct, anair-deflector and baffle-plates arranged within said air-duct, and means for directing a current of air'to the air-duct, substantially as and for the purpose set forth. f

15. The combination with a pendent air? duct, and means for breaking airin said duct, said means comprising a series of spacedapart perforated plates, and a hood or cover supported a slight distance above the upper ends of said plates, said hood overhangin g the outermost plates, substantially as described.

16. In a stove, the combination with a fuelmagazine, a perforated pendent air duct, means secured within the lower end of said air-duct for distributing the air, and a fuelfeeding chute entering said magazine, said chute being provided with air-inlet pipes, substantially as shown and described.

17. In a stove, the combination with an airduct, a fuel-magazine, a housing having an inner and outer bottom, the former having a perforation near its outer end, said housing being formed at one side and at a point behind the air-duct, a frame carrying a sheet of mica in the outer end of said housing, and a flue communicating with the ashpit,and supplying air around the inner face of the mica, substantially as shown and described.

18. In a stove, the combination with a fuelmagazine, a pendent air-duct located within said fuel-magazine, air-inlet pipe or pipes located within said fuel-magazine, the upper ends of said pipes communicating with the upper end of the air-duct and the lower ends of said pipes communicating with the atmosphere at a point near the grate, means'for Vcomprisin g depending regulating the supply of air to the air-duct, and a plurality of air-distributers having eX- its formed at their meeting ends in the airduct for distributing air, substantially as described.

19. In a stove, the combination with a fuelmagazine, a perforated air-duct having removable air-distributers secured within the Alower end of said air-duct, pipes located in vsaid fuel-magazine,said pipes communicating with the atmosphere at a point above the grate for supplying heated air to said duct, air-heating chambers located adjacent the magazine, ysaid chambers having exits which communicate with the fuel ,magazine, and means for regulating the supply of air thereto, substantially as described.

20. In a stove, the combination with an airduct, and a plurality of air-distributers comprising securing ends and depending ends, said depending ends adapted to form arches between each other when secured to the airduct, substantially as described.

2l. In a stove, the combination with an airduct, and a plurality ofair-distributers, comprising securing ends and depending ends, said depending ends adapted to form arches between each other when secured to the airduct, and a series of openings being arranged at right angles to each other in the meeting faces of said air-distributers, substantiallyas described.

22. In a stove, the combination with a fuelmagazine, a pendent air-duct, said duct comprising depending perforated plates, perforated shields provided w'ith a series of ribs and attached to said plates, air-distributers removably secured between the lower ends of the plates, and ribs on said distributers which form contin nations of the ribs .on said shields, substantially as described.

23. In a stove, the combination with a fuelmagazine, apendent air-duct, said air-duct plates, corrugated shields attached to said plates perforations being formed in said corrugations, an air-distributer removably secured between the lower ends of said plates and being provided with air-exits and ribs, said ribs being in alinement with and forming a continuation of the corrugations, substantially as described.

24. A shield for a pendent air-duct, corrugated in cross-section and having at its lower end a right angular inturned flange, and means Vcooperating with said inturned end to form air-distributers, substantially as described.

25. In astove, the combination with a pendent air-duct, means secured in the lower end of said duct for distributing heated air, and a corrugated shield having Yan inturned corrugated right-angular flange at its lower end, said corrugations forming air-exits with the means for distributing heated air, substantially as described.

26. In a stove, the combination with a fuelmagazine, anair-duct having a plurality of ICO IIO

spaces or notches at its lower end, means for supplying air between said spaces, air-heating chambers having air-exits adjacent the fuel-magazine,means foi-supplying air to said f door, means in said door for admitting air, a

fire-pot, a front grate, and a front door, a space being formed at the top of the grate forming communication between the lire-pot and the space between the front door' andthe grate, substantially as described.

2S. In a stove,the combination with a` feeddoor, means in said door for admitting air, a {ire-pot, a pendent air-duct, a front grate, and a front door, a space being formed at the top of the grate forming communication between the fire-pot and the Yspace between the front door and the grate, substantially as described.

29. In a stove, the combination with a fuelmagazine, a pendent perforated air-duct, airheating chambers having air-exits on the side of the fuelmagazine,.a removable feedingchute entering said magazine, and means in said chute for introducing air to the fuelmagazine, substantially as described.

30. In astove, the combination with a pendent air-duct, open at the bottom, a plurality of removable air-distributers secured in said open bottom, and having air-exits at their *meeting edges, baffle-plates in said duct, and Tmeans Yfor introducing air to the duct.

31. In a stove, the combination with a fuelmagazine, a pendent air-duct open at the bottom, distributers provided with air-exits secured in said open bottom, shields secured to the duct, baffle-plates in said duct, and a pipe or pipes passing-through said fuel-magazine to supply air to said air-duct, substantially as described.

32. In a stove, the combination with a fuelmagazine and lire-pot, a pendent air-duct, a

vertical grate, open at the top, a door cover' ing said grate, and a fuel-chute having airinlet pipes entering the fuel-magazine above the upper end of the grate, substantially as described.

33. In a stove, the combination with a fuelmagazine, an air-duct, air-distributers in the lower end of said air-duct, means for supplying air to both ends of the air-duct, air-heating chambers having air-inlets for introducing heated air to said fuel-magazine, means for regulating the supply of air thereto, a fuel-supply chute having air-inlet pipes entering the fuel-magazine, and means for introducing heated air to the fuel-magazine behind the air-duct, substantially as described.

34. In a stove, the combination with an airduct, a fuel-magazine, and means for introducing heated air to the fuel-magazine, said means comprising a housing having a false bottom provided with an opening which communicates with the interior of said housing,

and a i'lue communicating Withthe space between the housing and the false bottom for the admission of air, substantially as described.

35. In' a stove, the combinationwith a fuelmagazine, an air-duct.comprising depending plates and air-distributers betweenthe lower ends of said plates, means for delivering air 41o the fuel in the fuel-magazine from the airlduct, and a pipe or pipes passing through thek unagazine for supplying vair tosaid air-duct l from. the atmosphere, said pipe or pipes each having a daring end where it enters the airduct,`and means for regulating-the admission of air thereto, substantially asdesoribed.

36. In a stove, the combinationwith a fuelmagaziue,'an air-duct comprising'depending perforated plates, air-distributers, -a perforated shield secured to said depending plates, baffle-plates between saidy depending plates and shield, 'baffle-plates between the depending plates, and apipe or pipes passing through the magazine for supplying air to said airduct, substantially as described.

37. In a stove, the combination with a fuelmagazine, means for introducing air thereto, said means comprising a flue located to heat air in its passage therethrough, a protuberance or housing in proximity to said flue, said housing having an opening which communicates with said flue, a sheet of transparent material in the housing and adjacent the opening therein, all for the purpose of supplying air to the fuel-magazine and preventing soot accumulating on the transparent material, substantially as described.

3S. A pendent air-duct, open at the bottom, means for supplying air to said air-duct, and an air-distributer consisting of a pendent end, and a securing end, angular grooves in the distributer at a point where said distributer enters the air-duct,substantially as described.

39. An air-duct open at the bottom, a plurality of spaced-apart removable air-distributers having air-exits at their meeting edges and secured Within the air-duct, and a sectional shield secured to said air-duct, substantially as described.

4Q. A pendent air-duct, anda series of airdistributers each consisting of a body portion which tapers at its lower end and is provided with horizontal and vertical grooves, a securing upper end portion which iits within said air-duct, said portion having a series of vertical grooves which form a continuation of the grooves in the body portion, said tapering ends forming spaces between said distributers when two or more of the same are placed in the air-duct, substantially as described.

41. In a stove, the combination with afuelmagazine, a pendent air-duct, pipes in said magazine which communicate with the atmosphere and the air-duct to supply heated air to said air-duct, a perforated lining in said fuel-magazine set in from the stove sides to form an air-heating chamber, and means ICO IIO

and the air-heating chamber, substantially as described.

43. A pendent air-duct, and a plurality of solid air-distributers having notches at their meeting edges to form air-exits, said distribuf ters consisting of. a main portion, and a reduced upper portion, the latter portion tting in said air-duct, substantially as described.

44. In astove, the combinationwith a pendent air-duct, an airdeiiector and balTle-plates arranged Within said air-duct, and means fory directing currents of heated air to the airduct, substantially as described.

45. In a stove, the combination'with a fuelmagazine, a pendent airduct open at the bottom, air-distributers provided with air-exits at their outer edges and secured in said open bottom, shields secured to the air-duct, bafvfie-plates in said air-duct, and means in the magazine for supplying heated air to the airduct, substantially as described.

InV testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

EDWIN R. CAHOONE.

Vitnesses: v

WM. J. SNYDER, RUSSELL J. W. SNYDER. 

